target/ppc: remove 401/403 CPUs

They have been there since 2007 without any board using them, most
were protected by a TODO define. Drop support.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20211202191108.1291515-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

7 files changed, 4 insertions, 608 deletions

diff --git a/target/ppc/cpu-models.c b/target/ppc/cpu-models.c
index 4baa111..c9fcb61 100644
--- a/target/ppc/cpu-models.c
+++ b/target/ppc/cpu-models.c
@@ -67,40 +67,6 @@
     POWERPC_DEF_SVR(_name, _desc, _pvr, POWERPC_SVR_NONE, _type)
 
     /* Embedded PowerPC                                                      */
-    /* PowerPC 401 family                                                    */
-    POWERPC_DEF("401",           CPU_POWERPC_401,                    401,
-                "Generic PowerPC 401")
-    /* PowerPC 401 cores                                                     */
-    POWERPC_DEF("401a1",         CPU_POWERPC_401A1,                  401,
-                "PowerPC 401A1")
-    POWERPC_DEF("401b2",         CPU_POWERPC_401B2,                  401x2,
-                "PowerPC 401B2")
-    POWERPC_DEF("401c2",         CPU_POWERPC_401C2,                  401x2,
-                "PowerPC 401C2")
-    POWERPC_DEF("401d2",         CPU_POWERPC_401D2,                  401x2,
-                "PowerPC 401D2")
-    POWERPC_DEF("401e2",         CPU_POWERPC_401E2,                  401x2,
-                "PowerPC 401E2")
-    POWERPC_DEF("401f2",         CPU_POWERPC_401F2,                  401x2,
-                "PowerPC 401F2")
-    /* XXX: to be checked */
-    POWERPC_DEF("401g2",         CPU_POWERPC_401G2,                  401x2,
-                "PowerPC 401G2")
-    /* PowerPC 401 microcontrollers                                          */
-    POWERPC_DEF("iop480",        CPU_POWERPC_IOP480,                 IOP480,
-                "IOP480 (401 microcontroller)")
-    POWERPC_DEF("cobra",         CPU_POWERPC_COBRA,                  401,
-                "IBM Processor for Network Resources")
-    /* PowerPC 403 family                                                    */
-    /* PowerPC 403 microcontrollers                                          */
-    POWERPC_DEF("403ga",         CPU_POWERPC_403GA,                  403,
-                "PowerPC 403 GA")
-    POWERPC_DEF("403gb",         CPU_POWERPC_403GB,                  403,
-                "PowerPC 403 GB")
-    POWERPC_DEF("403gc",         CPU_POWERPC_403GC,                  403,
-                "PowerPC 403 GC")
-    POWERPC_DEF("403gcx",        CPU_POWERPC_403GCX,                 403GCX,
-                "PowerPC 403 GCX")
     /* PowerPC 405 family                                                    */
     /* PowerPC 405 cores                                                     */
     POWERPC_DEF("405d2",         CPU_POWERPC_405D2,                  405,
diff --git a/target/ppc/cpu-models.h b/target/ppc/cpu-models.h
index 0952592..bf1dc7e 100644
--- a/target/ppc/cpu-models.h
+++ b/target/ppc/cpu-models.h
@@ -38,27 +38,8 @@ extern PowerPCCPUAlias ppc_cpu_aliases[];
 /*****************************************************************************/
 /* PVR definitions for most known PowerPC                                    */
 enum {
-    /* PowerPC 401 family */
-    /* Generic PowerPC 401 */
-#define CPU_POWERPC_401              CPU_POWERPC_401G2
-    /* PowerPC 401 cores */
-    CPU_POWERPC_401A1              = 0x00210000,
-    CPU_POWERPC_401B2              = 0x00220000,
-    CPU_POWERPC_401C2              = 0x00230000,
-    CPU_POWERPC_401D2              = 0x00240000,
-    CPU_POWERPC_401E2              = 0x00250000,
-    CPU_POWERPC_401F2              = 0x00260000,
-    CPU_POWERPC_401G2              = 0x00270000,
-    /* PowerPC 401 microcontrolers */
-#define CPU_POWERPC_IOP480           CPU_POWERPC_401B2
     /* IBM Processor for Network Resources */
     CPU_POWERPC_COBRA              = 0x10100000, /* XXX: 405 ? */
-    /* PowerPC 403 family */
-    /* PowerPC 403 microcontrollers */
-    CPU_POWERPC_403GA              = 0x00200011,
-    CPU_POWERPC_403GB              = 0x00200100,
-    CPU_POWERPC_403GC              = 0x00200200,
-    CPU_POWERPC_403GCX             = 0x00201400,
     /* PowerPC 405 family */
     /* PowerPC 405 cores */
     CPU_POWERPC_405D2              = 0x20010000,
diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index 7d299f9..99a6b50 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -53,8 +53,6 @@ enum powerpc_mmu_t {
     POWERPC_MMU_SOFT_74xx  = 0x00000003,
     /* PowerPC 4xx MMU with software TLB                       */
     POWERPC_MMU_SOFT_4xx   = 0x00000004,
-    /* PowerPC 4xx MMU with software TLB and zones protections */
-    POWERPC_MMU_SOFT_4xx_Z = 0x00000005,
     /* PowerPC MMU in real mode only                           */
     POWERPC_MMU_REAL       = 0x00000006,
     /* Freescale MPC8xx MMU model                              */
@@ -149,8 +147,6 @@ enum powerpc_input_t {
     PPC_FLAGS_INPUT_POWER7,
     /* PowerPC POWER9 bus               */
     PPC_FLAGS_INPUT_POWER9,
-    /* PowerPC 401 bus                  */
-    PPC_FLAGS_INPUT_401,
     /* Freescale RCPU bus               */
     PPC_FLAGS_INPUT_RCPU,
 };
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index ccdd5c9..9603488 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -1553,169 +1553,6 @@ static void register_405_sprs(CPUPPCState *env)
     register_usprgh_sprs(env);
 }
 
-/* SPR shared between PowerPC 401 & 403 implementations */
-static void register_401_403_sprs(CPUPPCState *env)
-{
-    /* Time base */
-    spr_register(env, SPR_403_VTBL,  "TBL",
-                 &spr_read_tbl, SPR_NOACCESS,
-                 &spr_read_tbl, SPR_NOACCESS,
-                 0x00000000);
-    spr_register(env, SPR_403_TBL,   "TBL",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 SPR_NOACCESS, &spr_write_tbl,
-                 0x00000000);
-    spr_register(env, SPR_403_VTBU,  "TBU",
-                 &spr_read_tbu, SPR_NOACCESS,
-                 &spr_read_tbu, SPR_NOACCESS,
-                 0x00000000);
-    spr_register(env, SPR_403_TBU,   "TBU",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 SPR_NOACCESS, &spr_write_tbu,
-                 0x00000000);
-    /* Debug */
-    /* not emulated, as QEMU do not emulate caches */
-    spr_register(env, SPR_403_CDBCR, "CDBCR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
-
-/* SPR specific to PowerPC 401 implementation */
-static void register_401_sprs(CPUPPCState *env)
-{
-    /* Debug interface */
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DBCR0, "DBCR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_40x_dbcr0,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DBSR, "DBSR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_clear,
-                 /* Last reset was system reset */
-                 0x00000300);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DAC1, "DAC",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_IAC1, "IAC",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* Storage control */
-    /* XXX: TODO: not implemented */
-    spr_register(env, SPR_405_SLER, "SLER",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_40x_sler,
-                 0x00000000);
-    /* not emulated, as QEMU never does speculative access */
-    spr_register(env, SPR_40x_SGR, "SGR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0xFFFFFFFF);
-    /* not emulated, as QEMU do not emulate caches */
-    spr_register(env, SPR_40x_DCWR, "DCWR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
-
-static void register_401x2_sprs(CPUPPCState *env)
-{
-    register_401_sprs(env);
-    spr_register(env, SPR_40x_PID, "PID",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    spr_register(env, SPR_40x_ZPR, "ZPR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
-
-/* SPR specific to PowerPC 403 implementation */
-static void register_403_sprs(CPUPPCState *env)
-{
-    /* Debug interface */
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DBCR0, "DBCR0",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_40x_dbcr0,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DBSR, "DBSR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_clear,
-                 /* Last reset was system reset */
-                 0x00000300);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DAC1, "DAC1",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_DAC2, "DAC2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_IAC1, "IAC1",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_40x_IAC2, "IAC2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
-
-static void register_403_real_sprs(CPUPPCState *env)
-{
-    spr_register(env, SPR_403_PBL1,  "PBL1",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_403_pbr, &spr_write_403_pbr,
-                 0x00000000);
-    spr_register(env, SPR_403_PBU1,  "PBU1",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_403_pbr, &spr_write_403_pbr,
-                 0x00000000);
-    spr_register(env, SPR_403_PBL2,  "PBL2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_403_pbr, &spr_write_403_pbr,
-                 0x00000000);
-    spr_register(env, SPR_403_PBU2,  "PBU2",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_403_pbr, &spr_write_403_pbr,
-                 0x00000000);
-}
-
-static void register_403_mmu_sprs(CPUPPCState *env)
-{
-    /* MMU */
-    spr_register(env, SPR_40x_PID, "PID",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    spr_register(env, SPR_40x_ZPR, "ZPR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
-
-/* SPR specific to PowerPC compression coprocessor extension */
-static void register_compress_sprs(CPUPPCState *env)
-{
-    /* XXX : not implemented */
-    spr_register(env, SPR_401_SKR, "SKR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-}
 
 static void register_5xx_8xx_sprs(CPUPPCState *env)
 {
@@ -2103,26 +1940,6 @@ static void register_8xx_sprs(CPUPPCState *env)
 
 /*****************************************************************************/
 /* Exception vectors models                                                  */
-static void init_excp_4xx_real(CPUPPCState *env)
-{
-#if !defined(CONFIG_USER_ONLY)
-    env->excp_vectors[POWERPC_EXCP_CRITICAL] = 0x00000100;
-    env->excp_vectors[POWERPC_EXCP_MCHECK]   = 0x00000200;
-    env->excp_vectors[POWERPC_EXCP_EXTERNAL] = 0x00000500;
-    env->excp_vectors[POWERPC_EXCP_ALIGN]    = 0x00000600;
-    env->excp_vectors[POWERPC_EXCP_PROGRAM]  = 0x00000700;
-    env->excp_vectors[POWERPC_EXCP_SYSCALL]  = 0x00000C00;
-    env->excp_vectors[POWERPC_EXCP_PIT]      = 0x00001000;
-    env->excp_vectors[POWERPC_EXCP_FIT]      = 0x00001010;
-    env->excp_vectors[POWERPC_EXCP_WDT]      = 0x00001020;
-    env->excp_vectors[POWERPC_EXCP_DEBUG]    = 0x00002000;
-    env->ivor_mask = 0x0000FFF0UL;
-    env->ivpr_mask = 0xFFFF0000UL;
-    /* Hardware reset vector */
-    env->hreset_vector = 0xFFFFFFFCUL;
-#endif
-}
-
 static void init_excp_4xx_softmmu(CPUPPCState *env)
 {
 #if !defined(CONFIG_USER_ONLY)
@@ -2662,335 +2479,6 @@ static int check_pow_hid0_74xx(CPUPPCState *env)
                                                                             \
     static void glue(glue(ppc_, _name), _cpu_family_class_init)
 
-static void init_proc_401(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_401_sprs(env);
-    init_excp_4xx_real(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(12, 16, 20, 24);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(401)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "PowerPC 401";
-    pcc->init_proc = init_proc_401;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING |
-                       PPC_WRTEE | PPC_DCR |
-                       PPC_CACHE | PPC_CACHE_ICBI | PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << MSR_KEY) |
-                    (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_DE) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_REAL;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_DE |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
-static void init_proc_401x2(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_401x2_sprs(env);
-    register_compress_sprs(env);
-    /* Memory management */
-#if !defined(CONFIG_USER_ONLY)
-    env->nb_tlb = 64;
-    env->nb_ways = 1;
-    env->id_tlbs = 0;
-    env->tlb_type = TLB_EMB;
-#endif
-    init_excp_4xx_softmmu(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(12, 16, 20, 24);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(401x2)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "PowerPC 401x2";
-    pcc->init_proc = init_proc_401x2;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING | PPC_MFTB |
-                       PPC_DCR | PPC_WRTEE |
-                       PPC_CACHE | PPC_CACHE_ICBI | PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ | PPC_CACHE_DCBA |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_40x_TLB | PPC_MEM_TLBIA | PPC_MEM_TLBSYNC |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << 20) |
-                    (1ull << MSR_KEY) |
-                    (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_DE) |
-                    (1ull << MSR_IR) |
-                    (1ull << MSR_DR) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_SOFT_4xx_Z;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_DE |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
-static void init_proc_401x3(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_401_sprs(env);
-    register_401x2_sprs(env);
-    register_compress_sprs(env);
-    init_excp_4xx_softmmu(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(12, 16, 20, 24);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(401x3)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "PowerPC 401x3";
-    pcc->init_proc = init_proc_401x3;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING | PPC_MFTB |
-                       PPC_DCR | PPC_WRTEE |
-                       PPC_CACHE | PPC_CACHE_ICBI | PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ | PPC_CACHE_DCBA |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_40x_TLB | PPC_MEM_TLBIA | PPC_MEM_TLBSYNC |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << 20) |
-                    (1ull << MSR_KEY) |
-                    (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_DWE) |
-                    (1ull << MSR_DE) |
-                    (1ull << MSR_IR) |
-                    (1ull << MSR_DR) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_SOFT_4xx_Z;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_DE |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
-static void init_proc_IOP480(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_401x2_sprs(env);
-    register_compress_sprs(env);
-    /* Memory management */
-#if !defined(CONFIG_USER_ONLY)
-    env->nb_tlb = 64;
-    env->nb_ways = 1;
-    env->id_tlbs = 0;
-    env->tlb_type = TLB_EMB;
-#endif
-    init_excp_4xx_softmmu(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(8, 12, 16, 20);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(IOP480)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "IOP480";
-    pcc->init_proc = init_proc_IOP480;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING |
-                       PPC_DCR | PPC_WRTEE |
-                       PPC_CACHE | PPC_CACHE_ICBI |  PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ | PPC_CACHE_DCBA |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_40x_TLB | PPC_MEM_TLBIA | PPC_MEM_TLBSYNC |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << 20) |
-                    (1ull << MSR_KEY) |
-                    (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_DE) |
-                    (1ull << MSR_IR) |
-                    (1ull << MSR_DR) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_SOFT_4xx_Z;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_DE |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
-static void init_proc_403(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_403_sprs(env);
-    register_403_real_sprs(env);
-    init_excp_4xx_real(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(8, 12, 16, 20);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(403)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "PowerPC 403";
-    pcc->init_proc = init_proc_403;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING |
-                       PPC_DCR | PPC_WRTEE |
-                       PPC_CACHE | PPC_CACHE_ICBI | PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_PE) |
-                    (1ull << MSR_PX) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_REAL;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_PX |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
-static void init_proc_403GCX(CPUPPCState *env)
-{
-    register_40x_sprs(env);
-    register_401_403_sprs(env);
-    register_403_sprs(env);
-    register_403_real_sprs(env);
-    register_403_mmu_sprs(env);
-    /* Bus access control */
-    /* not emulated, as QEMU never does speculative access */
-    spr_register(env, SPR_40x_SGR, "SGR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0xFFFFFFFF);
-    /* not emulated, as QEMU do not emulate caches */
-    spr_register(env, SPR_40x_DCWR, "DCWR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* Memory management */
-#if !defined(CONFIG_USER_ONLY)
-    env->nb_tlb = 64;
-    env->nb_ways = 1;
-    env->id_tlbs = 0;
-    env->tlb_type = TLB_EMB;
-#endif
-    init_excp_4xx_softmmu(env);
-    env->dcache_line_size = 32;
-    env->icache_line_size = 32;
-    /* Allocate hardware IRQ controller */
-    ppc40x_irq_init(env_archcpu(env));
-
-    SET_FIT_PERIOD(8, 12, 16, 20);
-    SET_WDT_PERIOD(16, 20, 24, 28);
-}
-
-POWERPC_FAMILY(403GCX)(ObjectClass *oc, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(oc);
-    PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
-
-    dc->desc = "PowerPC 403 GCX";
-    pcc->init_proc = init_proc_403GCX;
-    pcc->check_pow = check_pow_nocheck;
-    pcc->insns_flags = PPC_INSNS_BASE | PPC_STRING |
-                       PPC_DCR | PPC_WRTEE |
-                       PPC_CACHE | PPC_CACHE_ICBI | PPC_40x_ICBT |
-                       PPC_CACHE_DCBZ |
-                       PPC_MEM_SYNC | PPC_MEM_EIEIO |
-                       PPC_40x_TLB | PPC_MEM_TLBIA | PPC_MEM_TLBSYNC |
-                       PPC_4xx_COMMON | PPC_40x_EXCP;
-    pcc->msr_mask = (1ull << MSR_POW) |
-                    (1ull << MSR_CE) |
-                    (1ull << MSR_ILE) |
-                    (1ull << MSR_EE) |
-                    (1ull << MSR_PR) |
-                    (1ull << MSR_ME) |
-                    (1ull << MSR_PE) |
-                    (1ull << MSR_PX) |
-                    (1ull << MSR_LE);
-    pcc->mmu_model = POWERPC_MMU_SOFT_4xx_Z;
-    pcc->excp_model = POWERPC_EXCP_40x;
-    pcc->bus_model = PPC_FLAGS_INPUT_401;
-    pcc->bfd_mach = bfd_mach_ppc_403;
-    pcc->flags = POWERPC_FLAG_CE | POWERPC_FLAG_PX |
-                 POWERPC_FLAG_BUS_CLK;
-}
-
 static void init_proc_405(CPUPPCState *env)
 {
     /* Time base */
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 1612b9b..cbd88f7 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1434,7 +1434,6 @@ void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
 
     switch (env->mmu_model) {
     case POWERPC_MMU_SOFT_4xx:
-    case POWERPC_MMU_SOFT_4xx_Z:
         env->spr[SPR_40x_DEAR] = vaddr;
         break;
     case POWERPC_MMU_BOOKE:
diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index 86795b2..4e27836 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -1173,11 +1173,9 @@ void dump_mmu(CPUPPCState *env)
 static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
                           MMUAccessType access_type)
 {
-    int in_plb, ret;
-
     ctx->raddr = eaddr;
     ctx->prot = PAGE_READ | PAGE_EXEC;
-    ret = 0;
+
     switch (env->mmu_model) {
     case POWERPC_MMU_SOFT_6xx:
     case POWERPC_MMU_SOFT_4xx:
@@ -1186,39 +1184,12 @@ static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr,
         ctx->prot |= PAGE_WRITE;
         break;
 
-    case POWERPC_MMU_SOFT_4xx_Z:
-        if (unlikely(msr_pe != 0)) {
-            /*
-             * 403 family add some particular protections, using
-             * PBL/PBU registers for accesses with no translation.
-             */
-            in_plb =
-                /* Check PLB validity */
-                (env->pb[0] < env->pb[1] &&
-                 /* and address in plb area */
-                 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
-                (env->pb[2] < env->pb[3] &&
-                 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
-            if (in_plb ^ msr_px) {
-                /* Access in protected area */
-                if (access_type == MMU_DATA_STORE) {
-                    /* Access is not allowed */
-                    ret = -2;
-                }
-            } else {
-                /* Read-write access is allowed */
-                ctx->prot |= PAGE_WRITE;
-            }
-        }
-        break;
-
     default:
         /* Caller's checks mean we should never get here for other models */
-        abort();
-        return -1;
+        g_assert_not_reached();
     }
 
-    return ret;
+    return 0;
 }
 
 int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
@@ -1247,7 +1218,6 @@ int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx,
         break;
 
     case POWERPC_MMU_SOFT_4xx:
-    case POWERPC_MMU_SOFT_4xx_Z:
         if (real_mode) {
             ret = check_physical(env, ctx, eaddr, access_type);
         } else {
@@ -1381,7 +1351,6 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
                     env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
                     goto tlb_miss;
                 case POWERPC_MMU_SOFT_4xx:
-                case POWERPC_MMU_SOFT_4xx_Z:
                     cs->exception_index = POWERPC_EXCP_ITLB;
                     env->error_code = 0;
                     env->spr[SPR_40x_DEAR] = eaddr;
@@ -1449,7 +1418,6 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
                         get_pteg_offset32(cpu, ctx.hash[1]);
                     break;
                 case POWERPC_MMU_SOFT_4xx:
-                case POWERPC_MMU_SOFT_4xx_Z:
                     cs->exception_index = POWERPC_EXCP_DTLB;
                     env->error_code = 0;
                     env->spr[SPR_40x_DEAR] = eaddr;
@@ -1482,8 +1450,7 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
                 /* Access rights violation */
                 cs->exception_index = POWERPC_EXCP_DSI;
                 env->error_code = 0;
-                if (env->mmu_model == POWERPC_MMU_SOFT_4xx
-                    || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
+                if (env->mmu_model == POWERPC_MMU_SOFT_4xx) {
                     env->spr[SPR_40x_DEAR] = eaddr;
                     if (access_type == MMU_DATA_STORE) {
                         env->spr[SPR_40x_ESR] |= 0x00800000;
diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index f992131..2ec3d20 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -388,7 +388,6 @@ void ppc_tlb_invalidate_all(CPUPPCState *env)
         ppc6xx_tlb_invalidate_all(env);
         break;
     case POWERPC_MMU_SOFT_4xx:
-    case POWERPC_MMU_SOFT_4xx_Z:
         ppc4xx_tlb_invalidate_all(env);
         break;
     case POWERPC_MMU_REAL: